Tools – Receptacle closure remover – Gripping type
Patent
1979-01-22
1980-12-30
Smith, James G.
Tools
Receptacle closure remover
Gripping type
81 43, B67B 700
Patent
active
042416272
ABSTRACT:
A hand tool for use in providing protective manual assistance in opening frangible hermetically sealed ampuls having an elongated main body portion and an integral axially projecting removable end merging with the body portion through a peripherally constricted and relatively weakened neck designed to fracture and separate the removable end from the body portion in response to a bending stress manually applied to the removable end portion. The hand tool comprises an essentially rigid one-piece construction which may be manually gripped within one hand of the user and which is designed to accommodate its reuse with widely varying ampul sizes. The hand tool features a pair of elongate protective finger grips arranged in side-by-side interspaced relationship at one end and integrally merging together at an opposite longitudinal end to define a generally U-shaped central recess within which to position the removable end of a sealed ampul. One of the finger grips is provided with a fulcrum having a relatively narrow edge surface upon which to seat the constricted neck of the ampul while the other finger grip is provided with a counterposed bearing surface arranged to overreach the removable end of the ampul and bear against the same in response to manually pivoting the hand tool against the removable end of the ampul. Whereupon, the fulcrum is caused to counteractively bear against the constricted neck and impart a selectively concentrated bending moment thereto which causes the neck to fracture cleanly along a narrowly defined transverse fracture path. During such removal of the removable end, the finger grips protectively shield the fingers of the user from injurious contact with the residual raw edges of the fractured ampul.
REFERENCES:
patent: 1490459 (1924-04-01), Fergusson
patent: 2503517 (1950-04-01), Sirica
patent: 2566434 (1951-09-01), Toth et al.
Click Myron E.
Nelson John R.
Owens--Illinois, Inc.
Smith James G.
Wilson David H.
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